Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]
FreeBSD/Linux Kernel Cross Reference
sys/i386/acpica/madt.c
Version:
- FREEBSD - FREEBSD-13-STABLE - FREEBSD-13-0 - FREEBSD-12-STABLE - FREEBSD-12-0 - FREEBSD-11-STABLE - FREEBSD-11-0 - FREEBSD-10-STABLE - FREEBSD-10-0 - FREEBSD-9-STABLE - FREEBSD-9-0 - FREEBSD-8-STABLE - FREEBSD-8-0 - FREEBSD-7-STABLE - FREEBSD-7-0 - FREEBSD-6-STABLE - FREEBSD-6-0 - FREEBSD-5-STABLE - FREEBSD-5-0 - FREEBSD-4-STABLE - FREEBSD-3-STABLE - FREEBSD22 - l41 - OPENBSD - linux-2.6 - MK84 - PLAN9 - xnu-8792
SearchContext: - none - 3 - 10
SearchContext: - none - 3 - 10
1 /*- 2 * Copyright (c) 2003 John Baldwin <jhb@FreeBSD.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the author nor the names of any co-contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30 #include <sys/cdefs.h> 31 __FBSDID("$FreeBSD: releng/5.2/sys/i386/acpica/madt.c 123133 2003-12-03 20:33:18Z jhb $"); 32 33 #include <sys/param.h> 34 #include <sys/systm.h> 35 #include <sys/bus.h> 36 #include <sys/kernel.h> 37 #include <sys/malloc.h> 38 #include <sys/smp.h> 39 40 #include <vm/vm.h> 41 #include <vm/vm_param.h> 42 #include <vm/pmap.h> 43 44 #include <machine/apicreg.h> 45 #include <machine/frame.h> 46 #include <machine/intr_machdep.h> 47 #include <machine/apicvar.h> 48 #include <machine/md_var.h> 49 #include <machine/specialreg.h> 50 51 #include "acpi.h" 52 #include <dev/acpica/acpivar.h> 53 #include <dev/acpica/madt.h> 54 #include <dev/pci/pcivar.h> 55 56 #define NIOAPICS 32 /* Max number of I/O APICs */ 57 #define NLAPICS 32 /* Max number of local APICs */ 58 59 typedef void madt_entry_handler(APIC_HEADER *entry, void *arg); 60 61 /* These two arrays are indexed by APIC IDs. */ 62 struct ioapic_info { 63 void *io_apic; 64 UINT32 io_vector; 65 } ioapics[NIOAPICS]; 66 67 struct lapic_info { 68 u_int la_present:1; 69 u_int la_enabled:1; 70 u_int la_apic_id:8; 71 } lapics[NLAPICS + 1]; 72 73 static APIC_TABLE *madt; 74 static vm_paddr_t madt_physaddr; 75 static vm_offset_t madt_length; 76 77 MALLOC_DEFINE(M_MADT, "MADT Table", "ACPI MADT Table Items"); 78 79 static u_char interrupt_polarity(UINT16 Polarity); 80 static u_char interrupt_trigger(UINT16 TriggerMode); 81 static int madt_find_cpu(u_int acpi_id, u_int *apic_id); 82 static int madt_find_interrupt(int intr, void **apic, u_int *pin); 83 static void *madt_map(vm_paddr_t pa, int offset, vm_offset_t length); 84 static void *madt_map_table(vm_paddr_t pa, int offset, const char *sig); 85 static void madt_parse_apics(APIC_HEADER *entry, void *arg); 86 static void madt_parse_interrupt_override(INTERRUPT_SOURCE_OVERRIDE *intr); 87 static void madt_parse_ints(APIC_HEADER *entry, void *arg __unused); 88 static void madt_parse_local_nmi(LAPIC_NMI *nmi); 89 static void madt_parse_nmi(NMI *nmi); 90 static int madt_probe(void); 91 static int madt_probe_cpus(void); 92 static void madt_probe_cpus_handler(APIC_HEADER *entry, void *arg __unused); 93 static int madt_probe_table(vm_paddr_t address); 94 static void madt_register(void *dummy); 95 static int madt_setup_local(void); 96 static int madt_setup_io(void); 97 static void madt_unmap(void *data, vm_offset_t length); 98 static void madt_unmap_table(void *table); 99 static void madt_walk_table(madt_entry_handler *handler, void *arg); 100 101 static struct apic_enumerator madt_enumerator = { 102 "MADT", 103 madt_probe, 104 madt_probe_cpus, 105 madt_setup_local, 106 madt_setup_io 107 }; 108 109 /* 110 * Code to abuse the crashdump map to map in the tables for the early 111 * probe. We cheat and make the following assumptions about how we 112 * use this KVA: page 0 is used to map in the first page of each table 113 * found via the RSDT or XSDT and pages 1 to n are used to map in the 114 * RSDT or XSDT. The offset is in pages; the length is in bytes. 115 */ 116 static void * 117 madt_map(vm_paddr_t pa, int offset, vm_offset_t length) 118 { 119 vm_offset_t va, off; 120 void *data; 121 122 off = pa & PAGE_MASK; 123 length = roundup(length + off, PAGE_SIZE); 124 pa = pa & PG_FRAME; 125 va = (vm_offset_t)pmap_kenter_temporary(pa, offset) + 126 (offset * PAGE_SIZE); 127 data = (void *)(va + off); 128 length -= PAGE_SIZE; 129 while (length > 0) { 130 va += PAGE_SIZE; 131 pa += PAGE_SIZE; 132 length -= PAGE_SIZE; 133 pmap_kenter(va, pa); 134 invlpg(va); 135 } 136 return (data); 137 } 138 139 static void 140 madt_unmap(void *data, vm_offset_t length) 141 { 142 vm_offset_t va, off; 143 144 va = (vm_offset_t)data; 145 off = va & PAGE_MASK; 146 length = roundup(length + off, PAGE_SIZE); 147 va &= ~PAGE_MASK; 148 while (length > 0) { 149 pmap_kremove(va); 150 invlpg(va); 151 va += PAGE_SIZE; 152 length -= PAGE_SIZE; 153 } 154 } 155 156 static void * 157 madt_map_table(vm_paddr_t pa, int offset, const char *sig) 158 { 159 ACPI_TABLE_HEADER *header; 160 vm_offset_t length; 161 162 header = madt_map(pa, offset, sizeof(ACPI_TABLE_HEADER)); 163 if (strncmp(header->Signature, sig, 4) != 0) { 164 madt_unmap(header, sizeof(ACPI_TABLE_HEADER)); 165 return (NULL); 166 } 167 length = header->Length; 168 madt_unmap(header, sizeof(ACPI_TABLE_HEADER)); 169 return (madt_map(pa, offset, length)); 170 } 171 172 static void 173 madt_unmap_table(void *table) 174 { 175 ACPI_TABLE_HEADER *header; 176 177 header = (ACPI_TABLE_HEADER *)table; 178 madt_unmap(table, header->Length); 179 } 180 181 /* 182 * Look for an ACPI Multiple APIC Description Table ("APIC") 183 */ 184 static int 185 madt_probe(void) 186 { 187 ACPI_POINTER rsdp_ptr; 188 RSDP_DESCRIPTOR *rsdp; 189 RSDT_DESCRIPTOR *rsdt; 190 XSDT_DESCRIPTOR *xsdt; 191 int i, count; 192 193 if (resource_disabled("acpi", 0)) 194 return (ENXIO); 195 196 /* 197 * Map in the RSDP. Since ACPI uses AcpiOsMapMemory() which in turn 198 * calls pmap_mapdev() to find the RSDP, we assume that we can use 199 * pmap_mapdev() to map the RSDP. 200 */ 201 if (AcpiOsGetRootPointer(ACPI_LOGICAL_ADDRESSING, &rsdp_ptr) != AE_OK) 202 return (ENXIO); 203 #ifdef __i386__ 204 KASSERT(rsdp_ptr.Pointer.Physical < KERNLOAD, ("RSDP too high")); 205 #endif 206 rsdp = pmap_mapdev(rsdp_ptr.Pointer.Physical, sizeof(RSDP_DESCRIPTOR)); 207 if (rsdp == NULL) { 208 if (bootverbose) 209 printf("MADT: Failed to map RSDP\n"); 210 return (ENXIO); 211 } 212 213 /* 214 * For ACPI < 2.0, use the RSDT. For ACPI >= 2.0, use the XSDT. 215 * We map the XSDT and RSDT at page 1 in the crashdump area. 216 * Page 0 is used to map in the headers of candidate ACPI tables. 217 */ 218 if (rsdp->Revision >= 2) { 219 xsdt = madt_map_table(rsdp->XsdtPhysicalAddress, 1, XSDT_SIG); 220 if (xsdt == NULL) { 221 if (bootverbose) 222 printf("MADT: Failed to map XSDT\n"); 223 return (ENXIO); 224 } 225 count = (xsdt->Header.Length - sizeof(ACPI_TABLE_HEADER)) / 226 sizeof(UINT64); 227 for (i = 0; i < count; i++) 228 if (madt_probe_table(xsdt->TableOffsetEntry[i])) 229 break; 230 madt_unmap_table(xsdt); 231 } else { 232 rsdt = madt_map_table(rsdp->RsdtPhysicalAddress, 1, RSDT_SIG); 233 if (rsdt == NULL) { 234 if (bootverbose) 235 printf("MADT: Failed to map RSDT\n"); 236 return (ENXIO); 237 } 238 count = (rsdt->Header.Length - sizeof(ACPI_TABLE_HEADER)) / 239 sizeof(UINT32); 240 for (i = 0; i < count; i++) 241 if (madt_probe_table(rsdt->TableOffsetEntry[i])) 242 break; 243 madt_unmap_table(rsdt); 244 } 245 pmap_unmapdev((vm_offset_t)rsdp, sizeof(RSDP_DESCRIPTOR)); 246 if (madt_physaddr == 0) { 247 if (bootverbose) 248 printf("MADT: No MADT table found\n"); 249 return (ENXIO); 250 } 251 if (bootverbose) 252 printf("MADT: Found table at 0x%jx\n", 253 (uintmax_t)madt_physaddr); 254 255 return (0); 256 } 257 258 /* 259 * See if a given ACPI table is the MADT. 260 */ 261 static int 262 madt_probe_table(vm_paddr_t address) 263 { 264 ACPI_TABLE_HEADER *table; 265 266 table = madt_map(address, 0, sizeof(ACPI_TABLE_HEADER)); 267 if (table == NULL) { 268 if (bootverbose) 269 printf("MADT: Failed to map table at 0x%jx\n", 270 (uintmax_t)address); 271 return (0); 272 } 273 if (bootverbose) 274 printf("Table '%.4s' at 0x%jx\n", table->Signature, 275 (uintmax_t)address); 276 277 /* XXX: Verify checksum? */ 278 if (strncmp(table->Signature, APIC_SIG, 4) != 0) { 279 madt_unmap(table, sizeof(ACPI_TABLE_HEADER)); 280 return (0); 281 } 282 madt_physaddr = address; 283 madt_length = table->Length; 284 madt_unmap(table, sizeof(ACPI_TABLE_HEADER)); 285 return (1); 286 } 287 288 /* 289 * Run through the MP table enumerating CPUs. 290 */ 291 static int 292 madt_probe_cpus(void) 293 { 294 295 madt = madt_map_table(madt_physaddr, 0, APIC_SIG); 296 KASSERT(madt != NULL, ("Unable to re-map MADT")); 297 madt_walk_table(madt_probe_cpus_handler, NULL); 298 madt_unmap_table(madt); 299 madt = NULL; 300 return (0); 301 } 302 303 /* 304 * Initialize the local APIC on the BSP. 305 */ 306 static int 307 madt_setup_local(void) 308 { 309 310 madt = pmap_mapdev(madt_physaddr, madt_length); 311 lapic_init((uintptr_t)madt->LocalApicAddress); 312 printf("ACPI APIC Table: <%.*s %.*s>\n", 313 (int)sizeof(madt->Header.OemId), madt->Header.OemId, 314 (int)sizeof(madt->Header.OemTableId), madt->Header.OemTableId); 315 316 /* 317 * We ignore 64-bit local APIC override entries. Should we 318 * perhaps emit a warning here if we find one? 319 */ 320 return (0); 321 } 322 323 /* 324 * Run through the MP table enumerating I/O APICs. 325 */ 326 static int 327 madt_setup_io(void) 328 { 329 int i; 330 331 /* First, we run through adding I/O APIC's. */ 332 madt_walk_table(madt_parse_apics, NULL); 333 334 /* Second, we run through the table tweaking interrupt sources. */ 335 madt_walk_table(madt_parse_ints, NULL); 336 337 /* Third, we register all the I/O APIC's. */ 338 for (i = 0; i < NIOAPICS; i++) 339 if (ioapics[i].io_apic != NULL) 340 ioapic_register(ioapics[i].io_apic); 341 342 /* Finally, we throw the switch to enable the I/O APIC's. */ 343 acpi_SetDefaultIntrModel(ACPI_INTR_APIC); 344 345 return (0); 346 } 347 348 static void 349 madt_register(void *dummy __unused) 350 { 351 352 apic_register_enumerator(&madt_enumerator); 353 } 354 SYSINIT(madt_register, SI_SUB_CPU - 1, SI_ORDER_FIRST, madt_register, NULL) 355 356 /* 357 * Call the handler routine for each entry in the MADT table. 358 */ 359 static void 360 madt_walk_table(madt_entry_handler *handler, void *arg) 361 { 362 APIC_HEADER *entry; 363 u_char *p, *end; 364 365 end = (u_char *)(madt) + madt->Header.Length; 366 for (p = (u_char *)(madt + 1); p < end; ) { 367 entry = (APIC_HEADER *)p; 368 handler(entry, arg); 369 p += entry->Length; 370 } 371 } 372 373 static void 374 madt_probe_cpus_handler(APIC_HEADER *entry, void *arg) 375 { 376 PROCESSOR_APIC *proc; 377 struct lapic_info *la; 378 379 switch (entry->Type) { 380 case APIC_PROC: 381 /* 382 * The MADT does not include a BSP flag, so we have to 383 * let the MP code figure out which CPU is the BSP on 384 * its own. 385 */ 386 proc = (PROCESSOR_APIC *)entry; 387 if (bootverbose) 388 printf("MADT: Found CPU APIC ID %d ACPI ID %d: %s\n", 389 proc->LocalApicId, proc->ProcessorApicId, 390 proc->ProcessorEnabled ? "enabled" : "disabled"); 391 if (proc->ProcessorApicId > NLAPICS) 392 panic("%s: CPU ID %d too high", __func__, 393 proc->ProcessorApicId); 394 la = &lapics[proc->ProcessorApicId]; 395 KASSERT(la->la_present == 0, 396 ("Duplicate local ACPI ID %d", proc->ProcessorApicId)); 397 la->la_present = 1; 398 la->la_apic_id = proc->LocalApicId; 399 if (proc->ProcessorEnabled) { 400 la->la_enabled = 1; 401 lapic_create(proc->LocalApicId, 0); 402 } 403 break; 404 } 405 } 406 407 408 /* 409 * Add an I/O APIC from an entry in the table. 410 */ 411 static void 412 madt_parse_apics(APIC_HEADER *entry, void *arg __unused) 413 { 414 IO_APIC *apic; 415 416 417 switch (entry->Type) { 418 case APIC_IO: 419 apic = (IO_APIC *)entry; 420 if (bootverbose) 421 printf("MADT: Found IO APIC ID %d, Vector %d at %p\n", 422 apic->IoApicId, apic->Vector, 423 (void *)(uintptr_t)apic->IoApicAddress); 424 if (apic->IoApicId >= NIOAPICS) 425 panic("%s: I/O APIC ID %d too high", __func__, 426 apic->IoApicId); 427 if (ioapics[apic->IoApicId].io_apic != NULL) 428 panic("%s: Double APIC ID %d", __func__, 429 apic->IoApicId); 430 ioapics[apic->IoApicId].io_apic = ioapic_create( 431 (uintptr_t)apic->IoApicAddress, apic->IoApicId, 432 apic->Vector); 433 ioapics[apic->IoApicId].io_vector = apic->Vector; 434 break; 435 default: 436 break; 437 } 438 } 439 440 /* 441 * Determine properties of an interrupt source. Note that for ACPI, 442 * these are only used for ISA interrupts, so we assume ISA bus values 443 * (Active Hi, Edge Triggered) for conforming values. 444 */ 445 static u_char 446 interrupt_polarity(UINT16 Polarity) 447 { 448 449 switch (Polarity) { 450 case APIC_POLARITY_CONFORM: 451 case APIC_POLARITY_ACTIVEHI: 452 return (1); 453 case APIC_POLARITY_ACTIVELO: 454 return (0); 455 default: 456 panic("Bogus Interrupt Polarity"); 457 } 458 } 459 460 static u_char 461 interrupt_trigger(UINT16 TriggerMode) 462 { 463 464 switch (TriggerMode) { 465 case APIC_TRIGGER_CONFORM: 466 case APIC_TRIGGER_EDGE: 467 return (1); 468 case APIC_TRIGGER_LEVEL: 469 return (0); 470 default: 471 panic("Bogus Interrupt Trigger Mode"); 472 } 473 } 474 475 /* 476 * Find the local APIC ID associated with a given ACPI Processor ID. 477 */ 478 static int 479 madt_find_cpu(u_int acpi_id, u_int *apic_id) 480 { 481 482 if (!lapics[acpi_id].la_present) 483 return (ENOENT); 484 *apic_id = lapics[acpi_id].la_apic_id; 485 if (lapics[acpi_id].la_enabled) 486 return (0); 487 else 488 return (ENXIO); 489 } 490 491 /* 492 * Find the IO APIC and pin on that APIC associated with a given global 493 * interrupt. 494 */ 495 static int 496 madt_find_interrupt(int intr, void **apic, u_int *pin) 497 { 498 int i, best; 499 500 best = -1; 501 for (i = 0; i < NIOAPICS; i++) { 502 if (ioapics[i].io_apic == NULL || 503 ioapics[i].io_vector > intr) 504 continue; 505 if (best == -1 || 506 ioapics[best].io_vector < ioapics[i].io_vector) 507 best = i; 508 } 509 if (best == -1) 510 return (ENOENT); 511 *apic = ioapics[best].io_apic; 512 *pin = intr - ioapics[best].io_vector; 513 if (*pin > 32) 514 printf("WARNING: Found intpin of %u for vector %d\n", *pin, 515 intr); 516 return (0); 517 } 518 519 /* 520 * Parse an interrupt source override for an ISA interrupt. 521 */ 522 static void 523 madt_parse_interrupt_override(INTERRUPT_SOURCE_OVERRIDE *intr) 524 { 525 void *new_ioapic, *old_ioapic; 526 u_int new_pin, old_pin; 527 528 if (bootverbose) 529 printf("MADT: intr override: source %u, irq %u\n", 530 intr->Source, intr->GlobalSystemInterrupt); 531 KASSERT(intr->Bus == 0, ("bus for interrupt overrides must be zero")); 532 if (madt_find_interrupt(intr->GlobalSystemInterrupt, &new_ioapic, 533 &new_pin) != 0) { 534 printf("MADT: Could not find APIC for vector %d (IRQ %d)\n", 535 intr->GlobalSystemInterrupt, intr->Source); 536 return; 537 } 538 539 if (intr->Source != intr->GlobalSystemInterrupt) { 540 /* XXX: This assumes that the SCI uses IRQ 9. */ 541 if (intr->GlobalSystemInterrupt > 15 && intr->Source == 9) 542 acpi_OverrideInterruptLevel( 543 intr->GlobalSystemInterrupt); 544 else 545 ioapic_remap_vector(new_ioapic, new_pin, intr->Source); 546 if (madt_find_interrupt(intr->Source, &old_ioapic, 547 &old_pin) != 0) 548 printf("MADT: Could not find APIC for source IRQ %d\n", 549 intr->Source); 550 else if (ioapic_get_vector(old_ioapic, old_pin) == 551 intr->Source) 552 ioapic_disable_pin(old_ioapic, old_pin); 553 } 554 ioapic_set_triggermode(new_ioapic, new_pin, 555 interrupt_trigger(intr->TriggerMode)); 556 ioapic_set_polarity(new_ioapic, new_pin, 557 interrupt_polarity(intr->Polarity)); 558 } 559 560 /* 561 * Parse an entry for an NMI routed to an IO APIC. 562 */ 563 static void 564 madt_parse_nmi(NMI *nmi) 565 { 566 void *ioapic; 567 u_int pin; 568 569 if (madt_find_interrupt(nmi->GlobalSystemInterrupt, 570 &ioapic, &pin) != 0) { 571 printf("MADT: Could not find APIC for vector %d\n", 572 nmi->GlobalSystemInterrupt); 573 return; 574 } 575 576 ioapic_set_nmi(ioapic, pin); 577 if (nmi->TriggerMode != APIC_TRIGGER_CONFORM) 578 ioapic_set_triggermode(ioapic, pin, 579 interrupt_trigger(nmi->TriggerMode)); 580 if (nmi->Polarity != APIC_TRIGGER_CONFORM) 581 ioapic_set_polarity(ioapic, pin, 582 interrupt_polarity(nmi->Polarity)); 583 } 584 585 /* 586 * Parse an entry for an NMI routed to a local APIC LVT pin. 587 */ 588 static void 589 madt_parse_local_nmi(LAPIC_NMI *nmi) 590 { 591 u_int apic_id, pin; 592 593 if (nmi->ProcessorApicId == 0xff) 594 apic_id = APIC_ID_ALL; 595 else if (madt_find_cpu(nmi->ProcessorApicId, &apic_id) != 0) { 596 if (bootverbose) 597 printf("MADT: Ignoring local NMI routed to ACPI CPU %u\n", 598 nmi->ProcessorApicId); 599 return; 600 } 601 if (nmi->LINTPin == 0) 602 pin = LVT_LINT0; 603 else 604 pin = LVT_LINT1; 605 lapic_set_lvt_mode(apic_id, pin, APIC_LVT_DM_NMI); 606 if (nmi->TriggerMode != APIC_TRIGGER_CONFORM) 607 lapic_set_lvt_triggermode(apic_id, pin, 608 interrupt_trigger(nmi->TriggerMode)); 609 if (nmi->Polarity != APIC_POLARITY_CONFORM) 610 lapic_set_lvt_polarity(apic_id, pin, 611 interrupt_polarity(nmi->Polarity)); 612 } 613 614 /* 615 * Parse interrupt entries. 616 */ 617 static void 618 madt_parse_ints(APIC_HEADER *entry, void *arg __unused) 619 { 620 621 switch (entry->Type) { 622 case APIC_INTERRUPT_SOURCE_OVERRIDE: 623 madt_parse_interrupt_override( 624 (INTERRUPT_SOURCE_OVERRIDE *)entry); 625 break; 626 case APIC_NMI: 627 madt_parse_nmi((NMI *)entry); 628 break; 629 case APIC_LOCAL_APIC_NMI: 630 madt_parse_local_nmi((LAPIC_NMI *)entry); 631 break; 632 } 633 } 634 635 /* 636 * Setup per-CPU ACPI IDs. 637 */ 638 static void 639 madt_set_ids(void *dummy) 640 { 641 struct pcpu *pc; 642 u_int i, j; 643 644 if (madt == NULL) 645 return; 646 for (i = 0; i <= mp_maxid; i++) { 647 if (CPU_ABSENT(i)) 648 continue; 649 pc = pcpu_find(i); 650 KASSERT(pc != NULL, ("no pcpu data for CPU %d", i)); 651 for (j = 0; j < NLAPICS + 1; j++) { 652 if (!lapics[j].la_present || !lapics[j].la_enabled) 653 continue; 654 if (lapics[j].la_apic_id == pc->pc_apic_id) { 655 pc->pc_acpi_id = j; 656 if (bootverbose) 657 printf("APIC: CPU %u has ACPI ID %u\n", 658 i, j); 659 break; 660 } 661 } 662 if (j == NLAPICS + 1) 663 panic("Unable to find ACPI ID for CPU %d", i); 664 } 665 } 666 SYSINIT(madt_set_ids, SI_SUB_CPU, SI_ORDER_ANY, madt_set_ids, NULL)
Cache object: c9f027c2f219a917ea9f16bede0cd54d
[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]